To find the length of the arc, we need to use the formula:
Length of arc = (central angle/360) x (2πr)
where r is the radius of the circle.
In this case, the central angle is 142°, the radius is 4 cm, and we want to find the length of the bolded arc.
Length of arc = (142/360) x (2π x 4) Length of arc = (0.3944) x (8π) Length of arc ≈ 9.87
Rounding to two decimal places, the length of the bolded arc is approximately 9.87 cm.